In a large bowl, combine cake mix and pudding mix. Mix in the eggs, 1/2 cup water, oil and 1/2 cup rum. Blend well. Pour batter over chopped nuts in the pan. Sprinkle Chopped nuts on top of the cake mix

Bake in the preheated oven for 60 minutes, or until a toothpick inserted into the cake comes out clean. Let sit for 10 minutes in the pan, cut into small squares put in shot glasses Drizzle glaze over top of cake. Allow cake to absorb glaze and repeat until all glaze is used.

Glaze

In a saucepan, combine butter, 1/4 cup water and 1 cup sugar. Bring to a boil over medium heat and continue to boil for 5 minutes, stirring constantly. Remove from heat and stir in 1/2 cup rum.